Description:

Sulfonate copolymer filtration reduction agent DSP-2, which is made of acrylamide, acrylic acid, 2-acryloyl oxygen butyl sulfonic acid (AOBS), chloroepoxy propane and new ring-structure cationic monomer through a plurality of steps of polymerizations under the action of initiator, is capable of improving the viscosity of slurry, reducing filtration loss, improving mud cake quality, inhibiting clay dispersion, flocculating drilling cuttings, controlling solid content and formation mud making, ensuring the cleanness of drilling fluid, reducing well diameter enlargement ratio, as well as protecting hydrocarbon reservoir. The product is particularly suitable for sea water drilling fluid and deep well and ultra deep well drilling fluid with general dosage of 0.5 %- 2 %.

Feature 1.Good viscosity improvement and filtration reduction 2.Effectively improving the mud cake quality, inhibiting clay dispersion, stabilizing the well wall and reducing well diameter enlargement ratio 3.Good thermal stability with resistance to the high temperature reaching 200°C4.Effectively controlling solid content and protecting hydrocarbon reservoir 5.Good compatibility with other treating compounds6.Resistance to salt, calcium and magnesium, applicable to salt water, saturated brine and sea water drilling fluids